Using QUERY with Data Pump Export - expdp

You can use QUERY within expdp to do a selective export of a table
Here's the exact way you need to format your query

QUERY=SCHEMA.table_name:single_quote double_quote QUERY_CLAUSE double_quote single_quote

Below EXAMPLE will export the entire schema SCOTT but from table EMP only rows having EMPNO >= 7900 would be exported.

mylx1 $ expdp scott/tiger directory=data_pump_dir dumpfile=abc.dmp QUERY=scott.emp:'"where EMPNO >= 7900"'

Export: Release 11.2.0.3.0 - Production on Wed Jun 5 08:39:56 2013

Copyright (c) 1982, 2011, Oracle and/or its affiliates.  All rights reserved.

Connected to: Oracle Database 11g Enterprise Edition Release 11.2.0.3.0 - 64bit Production
With the Partitioning and Real Application Testing options
Starting "SCOTT"."SYS_EXPORT_SCHEMA_01":  scott/******** directory=data_pump_dir dumpfile=abc.dmp query=scott.emp:"where empno>=7900"
Estimate in progress using BLOCKS method...
Processing object type SCHEMA_EXPORT/TABLE/TABLE_DATA
Total estimation using BLOCKS method: 192 KB
Processing object type SCHEMA_EXPORT/USER
Processing object type SCHEMA_EXPORT/SYSTEM_GRANT
Processing object type SCHEMA_EXPORT/ROLE_GRANT
Processing object type SCHEMA_EXPORT/DEFAULT_ROLE
Processing object type SCHEMA_EXPORT/PRE_SCHEMA/PROCACT_SCHEMA
Processing object type SCHEMA_EXPORT/TABLE/TABLE
Processing object type SCHEMA_EXPORT/TABLE/COMMENT
Processing object type SCHEMA_EXPORT/TABLE/INDEX/INDEX
Processing object type SCHEMA_EXPORT/TABLE/CONSTRAINT/CONSTRAINT
Processing object type SCHEMA_EXPORT/TABLE/INDEX/STATISTICS/INDEX_STATISTICS
Processing object type SCHEMA_EXPORT/TABLE/CONSTRAINT/REF_CONSTRAINT
Processing object type SCHEMA_EXPORT/TABLE/STATISTICS/TABLE_STATISTICS
. . exported "SCOTT"."DEPT"                              5.929 KB       4 rows
. . exported "SCOTT"."EMP"                               8.109 KB       3 rows
. . exported "SCOTT"."SALGRADE"                          5.859 KB       5 rows
. . exported "SCOTT"."BONUS"                                 0 KB       0 rows
Master table "SCOTT"."SYS_EXPORT_SCHEMA_01" successfully loaded/unloaded
******************************************************************************
Dump file set for SCOTT.SYS_EXPORT_SCHEMA_01 is:
/usr/mydb1/expdp/abc.dmp
Job "SCOTT"."SYS_EXPORT_SCHEMA_01" successfully completed at 08:40:53

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